+++ /dev/null
-/*
- * ADM5120 PCI Host Controller driver
- *
- * Copyright (C) 2007-2008 Gabor Juhos <juhosg@openwrt.org>
- *
- * This code was based on the ADM5120 specific port of the Linux 2.6.10 kernel
- * done by Jeroen Vreeken
- * Copyright (C) 2005 Jeroen Vreeken (pe1rxq@amsat.org)
- *
- * Jeroen's code was based on the Linux 2.4.xx source codes found in various
- * tarballs released by Edimax for it's ADM5120 based devices
- * Copyright (C) ADMtek Incorporated
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 as published
- * by the Free Software Foundation.
- *
- */
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/spinlock.h>
-#include <linux/io.h>
-
-#include <linux/pci.h>
-#include <linux/pci_ids.h>
-#include <linux/pci_regs.h>
-
-#include <asm/delay.h>
-#include <asm/bootinfo.h>
-
-#include <asm/mach-adm5120/adm5120_defs.h>
-#include <asm/mach-adm5120/adm5120_info.h>
-#include <asm/mach-adm5120/adm5120_defs.h>
-#include <asm/mach-adm5120/adm5120_platform.h>
-
-#undef DEBUG
-
-#ifdef DEBUG
-#define DBG(f, a...) printk(KERN_DEBUG f, ## a)
-#else
-#define DBG(f, a...) do {} while (0)
-#endif
-
-#define PCI_ENABLE 0x80000000
-
-/* -------------------------------------------------------------------------*/
-
-static unsigned int adm5120_pci_nr_irqs __initdata;
-static struct adm5120_pci_irq *adm5120_pci_irq_map __initdata;
-
-static spinlock_t pci_lock = SPIN_LOCK_UNLOCKED;
-
-/* -------------------------------------------------------------------------*/
-
-static inline void write_cfgaddr(u32 addr)
-{
- __raw_writel((addr | PCI_ENABLE),
- (void __iomem *)(KSEG1ADDR(ADM5120_PCICFG_ADDR)));
-}
-
-static inline void write_cfgdata(u32 data)
-{
- __raw_writel(data, (void __iomem *)KSEG1ADDR(ADM5120_PCICFG_DATA));
-}
-
-static inline u32 read_cfgdata(void)
-{
- return __raw_readl((void __iomem *)KSEG1ADDR(ADM5120_PCICFG_DATA));
-}
-
-static inline u32 mkaddr(struct pci_bus *bus, unsigned int devfn, int where)
-{
- return (((bus->number & 0xFF) << 16) | ((devfn & 0xFF) << 8) | \
- (where & 0xFC));
-}
-
-/* -------------------------------------------------------------------------*/
-
-static int pci_config_read(struct pci_bus *bus, unsigned int devfn, int where,
- int size, u32 *val)
-{
- unsigned long flags;
- u32 data;
-
- spin_lock_irqsave(&pci_lock, flags);
-
- write_cfgaddr(mkaddr(bus, devfn, where));
- data = read_cfgdata();
-
- DBG("PCI: cfg_read %02u.%02u.%01u/%02X:%01d, cfg:0x%08X",
- bus->number, PCI_SLOT(devfn), PCI_FUNC(devfn),
- where, size, data);
-
- switch (size) {
- case 1:
- if (where & 1)
- data >>= 8;
- if (where & 2)
- data >>= 16;
- data &= 0xFF;
- break;
- case 2:
- if (where & 2)
- data >>= 16;
- data &= 0xFFFF;
- break;
- }
-
- *val = data;
- DBG(", 0x%08X returned\n", data);
-
- spin_unlock_irqrestore(&pci_lock, flags);
-
- return PCIBIOS_SUCCESSFUL;
-}
-
-static int pci_config_write(struct pci_bus *bus, unsigned int devfn, int where,
- int size, u32 val)
-{
- unsigned long flags;
- u32 data;
- int s;
-
- spin_lock_irqsave(&pci_lock, flags);
-
- write_cfgaddr(mkaddr(bus, devfn, where));
- data = read_cfgdata();
-
- DBG("PCI: cfg_write %02u.%02u.%01u/%02X:%01d, cfg:0x%08X",
- bus->number, PCI_SLOT(devfn), PCI_FUNC(devfn),
- where, size, data);
-
- switch (size) {
- case 1:
- s = ((where & 3) << 3);
- data &= ~(0xFF << s);
- data |= ((val & 0xFF) << s);
- break;
- case 2:
- s = ((where & 2) << 4);
- data &= ~(0xFFFF << s);
- data |= ((val & 0xFFFF) << s);
- break;
- case 4:
- data = val;
- break;
- }
-
- write_cfgdata(data);
- DBG(", 0x%08X written\n", data);
-
- spin_unlock_irqrestore(&pci_lock, flags);
-
- return PCIBIOS_SUCCESSFUL;
-}
-
-struct pci_ops adm5120_pci_ops = {
- .read = pci_config_read,
- .write = pci_config_write,
-};
-
-/* -------------------------------------------------------------------------*/
-
-static void adm5120_pci_fixup(struct pci_dev *dev)
-{
- if (dev->devfn != 0)
- return;
-
- /* setup COMMAND register */
- pci_write_config_word(dev, PCI_COMMAND,
- (PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER));
-
- /* setup CACHE_LINE_SIZE register */
- pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, 4);
-
- /* setup BARS */
- pci_write_config_dword(dev, PCI_BASE_ADDRESS_0, 0);
- pci_write_config_dword(dev, PCI_BASE_ADDRESS_1, 0);
-}
-
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ADMTEK, PCI_DEVICE_ID_ADMTEK_ADM5120,
- adm5120_pci_fixup);
-
-/* -------------------------------------------------------------------------*/
-
-void __init adm5120_pci_set_irq_map(unsigned int nr_irqs,
- struct adm5120_pci_irq *map)
-{
- adm5120_pci_nr_irqs = nr_irqs;
- adm5120_pci_irq_map = map;
-}
-
-int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
-{
- int irq = -1;
- int i;
-
- if ((!adm5120_pci_nr_irqs) || (!adm5120_pci_irq_map)) {
- printk(KERN_ALERT "PCI: pci_irq_map is not initialized\n");
- goto out;
- }
-
- if (slot < 1 || slot > 3) {
- printk(KERN_ALERT "PCI: slot number %u is not supported\n",
- slot);
- goto out;
- }
-
- for (i = 0; i < adm5120_pci_nr_irqs; i++) {
- if ((adm5120_pci_irq_map[i].slot == slot)
- && (adm5120_pci_irq_map[i].func == PCI_FUNC(dev->devfn))
- && (adm5120_pci_irq_map[i].pin == pin)) {
- irq = adm5120_pci_irq_map[i].irq;
- break;
- }
- }
-
- if (irq < 0) {
- printk(KERN_ALERT "PCI: no irq found for %s pin:%u\n",
- pci_name((struct pci_dev *)dev), pin);
- } else {
- printk(KERN_INFO "PCI: mapping irq for %s pin:%u, irq:%d\n",
- pci_name((struct pci_dev *)dev), pin, irq);
- }
-
-out:
- return irq;
-}
-
-int pcibios_plat_dev_init(struct pci_dev *dev)
-{
- return 0;
-}
-
-/* -------------------------------------------------------------------------*/
-
-static struct resource pci_io_resource = {
- .name = "ADM5120 PCI I/O",
- .start = ADM5120_PCIIO_BASE,
- .end = ADM5120_PCICFG_ADDR-1,
- .flags = IORESOURCE_IO
-};
-
-static struct resource pci_mem_resource = {
- .name = "ADM5120 PCI MEM",
- .start = ADM5120_PCIMEM_BASE,
- .end = ADM5120_PCIIO_BASE-1,
- .flags = IORESOURCE_MEM
-};
-
-static struct pci_controller adm5120_controller = {
- .pci_ops = &adm5120_pci_ops,
- .io_resource = &pci_io_resource,
- .mem_resource = &pci_mem_resource,
-};
-
-static int __init adm5120_pci_setup(void)
-{
- if (adm5120_package_pqfp()) {
- printk(KERN_INFO "PCI: not available on ADM5120P\n");
- return -1;
- }
-
- /* Avoid ISA compat ranges. */
- PCIBIOS_MIN_IO = 0x00000000;
- PCIBIOS_MIN_MEM = 0x00000000;
-
- /* Set I/O resource limits. */
- ioport_resource.end = 0x1fffffff;
- iomem_resource.end = 0xffffffff;
-
- register_pci_controller(&adm5120_controller);
- return 0;
-}
-
-arch_initcall(adm5120_pci_setup);
projects / openwrt / svn-archive / archive.git / blobdiff